Its county seat is San Antonio, the second-most populous city in Texas and the seventh-largest city in the United States. Bexar County is included in the San Antonio-New Braunfels, TX metropolitan statistical area. Bexar county includes Government Canyon state natural area in northwestern part of the county.
If the screen width is 7 feet and the projector's throw ratio is 2.0 - 2.4:1 (because projectors have zoom lenses, they also have a range of throw ratios) then you can place your projector anywhere from 14 to 16.8 feet away from the screen.
They are definitely the least bright projectors almost all with less than 100 lumens. They are limited in use, need a really dark room to do a good job on a small screen â say 40 inches, but are the ultimate in portability. Pocket projectors are the next size up, and like Pico Projectors tend to have LED light sources. These weigh from roughly 1 lb. to about 4 pounds and are mostly 300 â 700 lumens with the brightest hitting 1000 lumens (2015). These are becoming more and more practical each year.